Leaf tips browning, curl up. Discoloration

Hello everyone, I'm new here. I have an indoor grow going and I have 2 plants about 4-5 weeks into veg. I have some pictures here to show, but my main concern has been lately that the plant hasn't grown much since I transplanted them to a bigger pot about 2 wks ago. All the soil i have used has been foxfarm oceanic. I water them every morning about 150ml each. The top layer of soil gets very dry by then. Now the bottom leaves are dying and browning/curling on tips of other leaves are starting to appear. The brown tips curl upward. I don't have a pH meter, but I was wondering if you had any suggestions. Thanks a lot guys!

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Ive also got this problem but I don't know what it is. My camera is broken so I haven't been able to post a pic to get some help and the leaves look exactly the same as this. Sorry I can't help you mate but maybe we have the same issue. What plants are they? Mine are Super lemon haze and x-line Black widow, they are 6 weeks old from seedling and have been in veg for nearly 3 weeks. I'm growing in miracle gro potting soil.

I've heard a lot of good and bad points about miracle gro soils but if it is some kind of nute burn they why would it only occur now and not kill the seedlings or small plants? I too don't have a soil PH tester but I keep fish so I know the PH of the water I'm using is ok.

Any help would be much appreciated and I'll try to get some pics of mine up!

So should I basically just flood the plant and then let the top inch or two dry out ? I haven't had any runoff coming out the bottom of the pot, but roots are starting to poke out the drainage hole. It's not rootbound, just a couple of the strands. Is it good to water the leaves too?

one thing i can add is the weight test pick it up before you water it and try to remember how it feels and then again after watering it you will notice a big difference . i just noticed the top of your pot its clay if i am not mistaken and those hold moister a wee bit longer then reg grow pots maybe before over watering scrath down and inch or two to see if under there is still wet or damp